Photoshop: Sketching two faces

Showing how I draw mouths. The key principle I'd wanna get across here is that when you draw mouths, you should think of them on a curved plane. You can use your hand to feel over the surface of your own mouth to see just how curved that surface actually is. What else? Oh yeah... Don't make the lines of the teeth too obvious cuz it looks ugly. lol. That's it I think. Tools: Photoshop Camtasia Studio Wacom Tablet